String theory landscape and false vacuaI don't understand where the overlap occurs with string theory, however? Or brane cosmology? Or is it implying that every universe created by interaction of branes would result in potentially many false vacua within that universe (due to the nature of string theory), so each "universe" created by brane collisions is actually a multiverse. So the "bulk" where these collisions are happening is actually a multiverse of multiverses?